ENHANCE MESH

 

Description:  The ENHANCE MESH function allows the user to correct modeling errors by evaluating and repairing several quality parameters simultaneously. The ENHANCE MESH function may be applied to complete models, parts, or selected elements.

 

The mesh quality parameters that can be repaired automatically using ENHANCE MESH are

¡¤         Warpage

¡¤         Taper

¡¤         Aspect Ratio

¡¤         Interior Angles

¡¤         Jacobian

 

The user may specify the criteria that will be used to evaluate the model and will subsequently be used to attempt to improve the mesh quality.

 

The ENHANCE MESH function uses an iterative approach to satisfy as many of the mesh quality parameters as possible. The convergence is controlled by the TOLERANCE value, and the number of iterations used to attempt to improve the mesh quality is the ITERATIONS parameter.

 

When the ENHANCE MESH function is executed, DSI will display a number at each element centroid, identifying the parameter(s) that have failed for that element. For instance, a value of 1,2,4 displayed at the element would indicate that the element has failed the warpage, taper, and interior angle criteria.

 

By selecting the FIXED BOUNDARY option, the outer boundaries of the model will not be modified during the mesh repair operations.

 

Usage:   

 

1.    DSI prompts:

>   SEARCHING FEATURE LINES¡­

   

•     EXIT returns the user to the model checker menu.

 

Enter CHECK AND REPAIR

 

          2.   The MESH QUALITY PARAMETERS window appears,

         

•     The user may define parameters. Upon clicking ¡°Check,¡± DSI prompts:

     >    xxxx ELEMENTS FAILED XXXXXX CHECK

     >    PICK A NODE WILL INITIATE DYNAMIC REPAIR

 

        Enter SELECT MESH

 

2.      DSI prompts:

>    SELECT ELEMENTS

 •    After entering DONE, the MESH QUALITY PARAMETERS window pops up.

 

    Enter SET DYNAMIC REPAIR

 

2.      The DYNAMIC REPAIR OPTION menu pops up, as following:

                       

 

3.    If entering NODE MOVE MODE, DSI prompts:

>   PLEASE SELECT NODE MOVE MODE

    

     

4.    If entering STEP VALUE, DSI prompts:

>   PLEASE INPUT STEP VALUE (DEFAULT = 1.0)